package com.work.filter;

import com.work.bean.User;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class TeacherFilter  implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest httpServletRequest = (HttpServletRequest) servletRequest;
        HttpServletResponse httpServletResponse = (HttpServletResponse) servletResponse;
        Object teacher = httpServletRequest.getSession().getAttribute("teacher");
        User user = (User) httpServletRequest.getSession().getAttribute("user");
        if (teacher == null && user.getType().equals("1")) {
            httpServletRequest.getRequestDispatcher("/pages/teacher/teacher_update.jsp").forward(servletRequest,servletResponse);
        } else {
            filterChain.doFilter(servletRequest,servletResponse);
        }
    }

    @Override
    public void destroy() {

    }
}
